<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单区域 -->
            <el-form :model="loginForm" :rules="loginFormRules" ref="loginFormRef" class="login_form">
                <!-- 用户名 -->
                <el-form-item prop="username">
                <el-input v-model="loginForm.username" prefix-icon="iconfont icon-users"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" v-on:click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>
<script>
import { log } from 'util';
    export default {
        data(){
            return {
                // 登录表单的绑定数据
                loginForm:{
                    username:'admin',
                    password:'123456'
                },
                loginFormRules:{
                    username:[
                        {required:true,message:'请输入用户名',trigger:'blur'},
                        {min:3,max:10,message:'长度在3到10个字符',trigger:'blur'}
                    ],
                    password:[
                        {required:true,message:'请输入密码',trigger:'blur'},
                        {min:6,max:15,message:'长度在6到15个字符',trigger:'blur'}
                    ]
                }
            }
        },
        methods:{
            // 点击重置按钮，重置登录表单
            resetLoginForm:function(){
                // console.log(this)//通过this获取loginFormRef：表单的引用
                // 思路的方式的转换
                this.$refs.loginFormRef.resetFields() 
            },
            // 
            login:function(){
                this.loginForm.username=this.loginForm.username.trim()
                this.loginForm.password=this.loginForm.password.trim()
                this.$refs.loginFormRef.validate(async valid=>{
                    // console.log(v1);//boolean值
                    // console.log(v2);//v2是验证不通过返回的字段
                    if(!valid) return; 
                    const {data:res}=await this.$http.post("login",this.loginForm)     
                    // console.log(res);
                    if(res.meta.status !==200) return this.$message.error('登录失败')
                        this.$message.success('登录成功')    
                        // 1.将登录成功之后的token,保存到客户端的sessionStorage中
                        //    1.1项目中除了登录API，其他接口均需要登录之后才能访问
                        //  1.2 token只在当前网页打开时生效，所以将token保存在sessionStorage中
                        console.log(res);
                        window.sessionStorage.setItem("token",res.data.token) 
                        // 2.通过编程式导航跳转到后台主页，路由地址是/home
                        this.$router.push('/home')
                })
            }

        }
    }
</script>

<style lang="less" scoped>
    .login_container{
        height:100%;
        background-color: #2b4b6b;
    }
    .login_box{
        width: 450px;
        height: 300px;
        background-color:#fff;
        border-radius: 3px;
        position: absolute;
        left: 50%;
        top:50%;
        transform: translate(-50%,-50%);
        .avatar_box{
            height: 130px;
            width: 130px;
            border:1px solid #eee;
            border-radius:50%;
            padding:10px;
            box-shadow: 0 0 10px #ddd;
            position:absolute;
            left: 50%;
            transform: translate(-50%,-50%);
            background-color: #fff;
            img{
                width: 100%;
                border-radius: 50%;
                background-color: #eee;
            }
        }

        
    }
    .login_form{
        position: absolute;
        bottom:0;
        width: 100%;
        padding:0 10px;
        box-sizing: border-box;
    }
    .btns{
            display: flex;
            justify-content: flex-end;
    }

</style>
